CN109154378A - Isolation and decoupling device - Google Patents

Isolation and decoupling device Download PDF

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Publication number
CN109154378A
CN109154378A CN201780031881.5A CN201780031881A CN109154378A CN 109154378 A CN109154378 A CN 109154378A CN 201780031881 A CN201780031881 A CN 201780031881A CN 109154378 A CN109154378 A CN 109154378A
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CN
China
Prior art keywords
torsionspring
wind spring
section
diameter
axis
Prior art date
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Granted
Application number
CN201780031881.5A
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Chinese (zh)
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CN109154378B (en
Inventor
A·塞科
I·克里曼
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Gates Corp
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Gates Corp
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Publication of CN109154378A publication Critical patent/CN109154378A/en
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Publication of CN109154378B publication Critical patent/CN109154378B/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/76—Friction clutches specially adapted to incorporate with other transmission parts, i.e. at least one of the clutch parts also having another function, e.g. being the disc of a pulley
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
    • F16D3/12—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted for accumulation of energy to absorb shocks or vibration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/50—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members
    • F16D3/72—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members with axially-spaced attachments to the coupling parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D41/00—Freewheels or freewheel clutches
    • F16D41/20—Freewheels or freewheel clutches with expandable or contractable clamping ring or band
    • F16D41/206—Freewheels or freewheel clutches with expandable or contractable clamping ring or band having axially adjacent coils, e.g. helical wrap-springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D7/00—Slip couplings, e.g. slipping on overload, for absorbing shock
    • F16D7/02—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type
    • F16D7/022—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type with a helical band or equivalent member co-operating with a cylindrical torque limiting coupling surface
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32—Friction members
    • F16H55/36—Pulleys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/08—Friction clutches with a helical band or equivalent member, which may be built up from linked parts, with more than one turn embracing a drum or the like, with or without an additional clutch actuating the end of the band
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2300/00—Special features for couplings or clutches
    • F16D2300/22—Vibration damping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32—Friction members
    • F16H55/36—Pulleys
    • F16H2055/366—Pulleys with means providing resilience or vibration damping

Abstract

A kind of Isolation and decoupling device comprising: the axis with outer surface；Belt wheel is rotatably engaged around the axis；Torsionspring has the first section and the second section, and first section has major diameter, and second section has minor diameter, and the major diameter is greater than the minor diameter, and the torsionspring is engaged with belt wheel；Wind spring, its internal diameter is less than the outer diameter of the outer surface, wind spring and the outer surface are frictionally engaged, torsionspring has the end for being fixedly connected to the wind spring, torsionspring is loaded along coiling direction, thus the diameter of each coil of torsionspring is reduced as load increases with progressive sequence, the radial outside of wind spring is arranged in second section, so that second section is moved radially inwardly during load condition to clamp wind spring, the belt wheel includes such component, the component is arranged to gradually discharge wind spring from the outer surface of axis when predetermined load state occurs.

Description

Isolation and decoupling device
Technical field
The present invention relates to a kind of Isolation and decoupling devices, more particularly it relates to a kind of isolation solution with torsionspring Coupling device, the torsionspring, which has, to be possessed the first section of major diameter and possesses the second section of minor diameter, which sets Set the radial outside in wind spring so that the second section moved radially inwardly during load condition so as to by wind spring by Gradually it is clamped to axis.
Background technique
Due to the benefit of better fuel economy, the diesel engine for car application increasingly increases.In addition, gasoline Engine gradually increases compression ratio to improve fuel efficiency.As a result, due to the above-mentioned variation in engine, diesel engine and Petrol engine assistant drive system must overcome the vibration by a larger margin from crankshaft.
Since crankshaft vibration increases the high inertia along with high acceleration/deceleration rate and alternating current generator, engine Assistant drive system often generates the noise of belt due to belt slippage.This can also reduce the service life of belt.
Crankshaft isolator/decoupler and alternating current generator decoupler/isolator are widely used in the hair with high angular oscillation Motivation, to filter the noise of the vibration within the scope of engine operational speed and also control belt.
The representative of this field is U.S. Patent number 8,931,610, it discloses a kind of isolator decoupler, the isolators Decoupler includes: belt wheel；Axis, the belt wheel are supported on the axis by axle journal on low friction bushing；Spring support, belt wheel is low The spring support is supported on by axle journal in friction bushings, the spring support is supported on low friction bushing by axle journal described Axis；The torsionspring being connected between belt wheel and spring support；With axis be frictionally engaged one-way clutch spring, it is described unidirectionally from Clutch spring is connected to spring support and the radially inner side of torsionspring is arranged in, and belt wheel being capable of temporary joint one-way clutch Thus the end of spring temporarily weakens the frictional engagement of one-way clutch spring and axis.
What is desired is that a kind of Isolation and decoupling device with torsionspring, which, which has, possesses the first of major diameter Section and the second section for possessing minor diameter, which is arranged in the radial outside of wind spring, so that the second section exists It is moved radially inwardly during load condition so that wind spring is gradually clamped to axis.Present invention accomplishes the needs.
Summary of the invention
Main aspect of the invention is a kind of Isolation and decoupling device with torsionspring, which has the first section With the second section, first section has major diameter, and second section has minor diameter, and second section setting is being wound The radial outside of spring, so that the second section moves radially inwardly gradually to be clamped to wind spring during load condition Axis.
By the following description of this invention and attached drawing, other aspects of the present invention will be noted or become aobvious and easy See.
The present invention includes a kind of Isolation and decoupling device comprising: axis, the axis have outer surface；Belt wheel, the belt wheel surround The axis rotatably engages；Torsionspring, the torsionspring have the first section and the second section, and first section has Major diameter, second section have minor diameter, and the major diameter is greater than the minor diameter, the torsionspring and the belt wheel Engagement；Wind spring, the internal diameter of the wind spring are less than the outer diameter of the outer surface, the wind spring and the outer surface It is frictionally engaged, the torsionspring has the end for being fixedly connected to wind spring, and the torsionspring is along coiling direction It is loaded, the diameter of each coil of the torsionspring is reduced as load increases with progressive sequence, second section The radial outside of wind spring is set, so that the second section moves radially inwardly to clamp the volume during load condition Around spring, the belt wheel includes such component, and the component is arranged in the case where predetermined load state occurs from the outer of the axis Surface gradually discharges the wind spring.
Detailed description of the invention
It is described attached comprising in the description and constituting the attached drawing of specification a part and showing the preferred embodiment of the present invention Figure is used to explain the principle of the present invention together with specification.
Fig. 1 is the viewgraph of cross-section of device；
Fig. 2 is the decomposition view of the device in Fig. 1；
Fig. 3 is the perspective view of torsionspring retainer；
Fig. 4 is the perspective view of torsionspring；
Fig. 5 is the perspective view of wind spring；
Fig. 6 is the viewgraph of cross-section of alternate embodiment；
Fig. 7 is the exploded view of the alternate embodiment in Fig. 6；
Fig. 8 is the perspective view of the retainer of substitution；
Fig. 9 is the perspective view of the torsionspring of substitution；
Figure 10 is the perspective view of the wind spring of substitution；
Figure 11 is the viewgraph of cross-section of alternate embodiment；
Figure 12 is the exploded view of the alternate embodiment in Figure 11.
Specific embodiment
Fig. 1 is the viewgraph of cross-section of the device.Isolation and decoupling device include belt wheel 30, torsionspring 70, axis 80, bearing 10, One-way clutch wind spring 20, torsionspring retainer component 40, bushing 50 and dustproof cover 60.
Belt wheel 30 is rotatably installed on axis 80 via bearing 10 and bushing 50.Bushing 50 is arranged in component 40 and axis Between 80.Component 40 includes peripheral surface 41.Component 40 is press-fitted into belt wheel 30.Bearing 10 is ball bearing or known in the art Any other suitable bearing, such as needle bearing, roller bearing etc..
One-way clutch member wind spring 20 is mounted on axis 80 using slight diameter interference, that is, wind spring The internal diameter on surface 25 be slightly smaller than the outer diameter of axis 80, the especially less than outer diameter on the surface 81 of axis.The interior table of wind spring 20 The outer surface 81 of the engagement of face 25 axis 80.The outer surface 81 has diameter (Y).
Fig. 2 is the exploded view of the device in Fig. 1.Torsionspring 70 is connected between component 40 and wind spring 20.It is holding One or more coils at portion 71 frictionally grip surface 41 and internal diameter marginally smaller compared with the outer diameter on surface 41. The end 72 of torsionspring 70 is directly connected to winding bullet by welding, laser welding, adhesive or other suitable methods The end of spring 20.Described device is rotated around axis A ﹣ A.
Torsionspring 70 includes coil section 22 and coil section 23.Section 22 has (small) diameter more smaller than section 23 (MM), the section 23 has major diameter (MD).Minor diameter (MM) than major diameter (MD) a small size " X ".Section 22 is directly arranged In the radial outside of wind spring 20.
During no-load condition, the section 22 of torsionspring 70 is in its minor diameter MMWith the outer surface of wind spring 20 it Between have small gap.For example, radial clearance between the two is in the range of 0.05mm to 0.2mm.
When applying load to belt wheel 30 from belt (not shown), by the end 71 of splice holder 40 along winding side To load torsionspring 70.Equally wind spring 20 also is loaded along coiling direction.
Torsion load is resisted in another end for being connected to wind spring 20 of torsionspring 70, this is because wind spring 20 due on its slight interference fit friction lock to axis 80 by surface 25.As the load that band is applied gradually increases Add, the diameter of torsionspring 70 reduces in radial directions relative to axis A ﹣ A.At certain moment, the section of torsionspring 70 The outer surface 21 of 22 contact wind springs 20.
For example, the rigidity of torsionspring is about 0.3 ﹣ 0.4Nm/ degree, and the peak torque load of torsionspring is about 18 ﹣ 22Nm.The end 71 of torsionspring is more than that the total angular displacement of end 72 is about 55 degree to 60 degree.Torsion bullet under maximum load The about 1.3 ﹣ 1.6mm of major diameter reduction amount of spring.
Initial contact between the section 22 and wind spring outer surface 21 of torsionspring occurs in end 71 to be more than end 72 about 10 degree at 15 degree of angular displacement, such as it is about the load of 4 ﹣ 6Nm.Number provided herein is exemplary, It is not intended to limit the scope of the invention.
When torsionspring 70 and wind spring 20 are in contact with each other, the inner surface 71 of section 22 engage wind spring 20 and Start to squeeze the wind spring.At this point, the bending stress of torsionspring does not exceed 4 ﹣ 6Nm, because torsionspring is locked A possibility that bending may be not present on wind spring.The section 22 of torsionspring 70 is used as wind spring, the wind spring Again on wind spring 20.In fact, wind spring 20 is sandwiched between torsionspring 70 and the surface 81 of axis.Then it turns round Torsional load is directly delivered to axis 80 from torsionspring 70 by the ontology of wind spring 20 and not had by the section 22 for turning spring Have and torsional load is loaded into the wind spring.This has the effect of increasing the torque carrying capability of device, the torsion after increase Square bearing capacity is more than only to be transmitted the torque carrying capability of realization by wind spring when loading.
Fig. 3 is the perspective view of torsionspring retainer.As load increases, each coil of section 23 is with progressive sequence Wind spring is engaged by radially reducing for diameter.
As maximum load security feature, due to increasing with load and torsionspring gradually rolls tightly, tab 42 will be approached And then engage the end 24 of wind spring.As load increases, torsionspring 70 is more closely wound, and before tab 42 Into the end 24 for then pressing pressing spring 20, this has the effect of advancing up end 24 in unwinding side, so that winding bullet The diameter of spring 20 increases, to reduce or discharge grasping of the wind spring on the surface of axis 81.This can protect device From being damaged under excessive-torque situation.
Fig. 4 is the perspective view of torsionspring.The end 71 of torsionspring 70 frictionally grip surface 41.This passes through torsion bullet Spring end coil or multiple torsion spring end coils realize that the internal diameter of the torsion spring end coil is slightly smaller than surface 41 outer diameter.End 72 is welded to wind spring 20.
Fig. 5 is the perspective view of wind spring.Under excessive-torque state, tab 42 is pressed on end 24 to make spring 20 Unwinding, to gradually discharge grasping of the spring on surface 81.Tab 42 in axial direction extends.Such as this paper institute of end 26 The end 72 of torsionspring 70 is soldered to as stating.
Fig. 6 is the viewgraph of cross-section of alternate embodiment.Unless be described herein, the otherwise component of the alternate embodiment such as first As described in embodiment.
Torsionspring 700 is connected between component 400 and wind spring 200.Coil or multiple coils at end 710 Frictionally grip surface 410 and coil outer diameter slightly larger compared with the internal diameter on surface 410.The end of torsionspring 700 Portion 720 is directly connected to the end of wind spring 200 by welding, laser welding, adhesive or other suitable methods 250。
The device is rotated around axis A ﹣ A.Bushing 500 allow belt wheel 30 relative to retainer 400 together with bearing 10 and Axis 80 rotates.Retainer 400 is fixed to or is press-fitted into axis 80.
Torsionspring 700 includes coil section 220 and coil section 230.Section 220 has more smaller than section 230 (small) diameter (MM), the section 230 has major diameter (MD).Minor diameter (MM) than major diameter (MD) a small size " Z ".Section 230 are set up directly on the radially inner side of wind spring 200 relative to A ﹣ A.
During non-loaded situation, the section 230 of torsionspring 700 is in its major diameter MDIn wind spring 200 There is small gap between surface.For example, radial clearance between the two is in the range of 0.05mm to 0.2mm.
When applying load to belt wheel 30 by belt (not shown), torsionspring 700 is loaded along unwinding direction.This be by It is engaged in the outer surface of wind spring 200 260 with the inner surface 31 of belt wheel.Wind spring 200 is loaded along unwinding direction.Wind bullet Spring 200 is loaded to torsionspring 700.Wind spring 200 is connected to torsionspring 700 at end 250, referring to Figure 10.
Another end support anti-torsion load for being connected to retainer 400 of torsionspring 700, this is because wind spring 200 due to its slight interference fit and friction lock is to the surface of belt wheel 31.As the load that belt is applied increases, torsion The diameter of spring 700 gradually increases in radial directions relative to axis A ﹣ A.At certain moment, the section of torsionspring 700 The inner surface 210 of 230 contact wind springs 200.
For example, torsionspring rigidity is about 0.3 ﹣ 0.4Nm/ degree, and the peak torque load of torsionspring is about 18 ﹣ 22Nm.The end 71 of torsionspring is more than that the total angular displacement of end 72 is about 55 degree to 60 degree.Torsionspring 70 is in maximum load Under major diameter reduction amount be about 1.3mm ﹣ 1.6mm.
Initial contact between the section 230 of torsionspring and the inner surface 210 of wind spring occurs in end 720 At about 10 degree to 15 degree of angular displacement of end 710, for example, it is about the load of 4 ﹣ 6Nm.
When torsionspring 700 and wind spring 200 are in contact with each other, the outer surface 720 of section 230 engages wind spring 200 and start the wind spring being pressed onto surface 31 outward.The bending stress of torsionspring does not exceed 4 ﹣ 6Nm at this time, because A possibility that being locked on wind spring for torsionspring without being bent.The section 230 of torsionspring 700 is used as winding Spring, wound on the radially inner side of wind spring 200.In fact, wind spring 200 is sandwiched in torsionspring 700 and belt wheel Surface 31 between.
Then, the torsional load from torsionspring 700 is directly delivered to axis 80 by the section 220 of torsionspring 700, and Wind spring will not be made to bear tension load due to blockage effect.This has the effect of the torque carrying capability of increase device, Torque carrying capability after increase is more than only to be transmitted the torque carrying capability of realization by wind spring when loading
As maximum load security feature, the angle by axis relative to belt wheel rotates, and lug 420 will be approached and then be engaged The end 240 of wind spring.Under load effect, wind spring 200 is loaded along unwinding direction.As load increases, tab 420 Advancing and then presses the end 240 of pressing spring 200, this has the effect of that end 240 is made to advance along the coiling direction of wind spring, To make wind spring 200 reduce or discharge its grasping on the surface of belt wheel 31.Shape of this anti-locking apparatus in excessive-torque It is damaged under condition.
Fig. 7 is the decomposition view of the alternate embodiment in Fig. 6.Surface 32 is configured to engage with multi-rib-belt.Surface 32 is also It can be configured to engage any belt as known in the art, including vee-belt or flat rubber belting.
Fig. 8 is the perspective view of the retainer of substitution.Surface 410 frictionally engages the end 710 of torsionspring 700.
Fig. 9 is the perspective view of the torsionspring of substitution.End 720 is soldered to wind spring as described herein 200 end 250.
Figure 10 is the perspective view of the wind spring of substitution.Surface 260 frictionally engages the surface 31 of belt wheel 30.
Figure 11 is the viewgraph of cross-section of alternate embodiment.In this alternative embodiment, spring retainer 40 is by retainer 4000 replace.Retainer 4000 is for example fixed to belt wheel 30 by press-fit, adhesive or welding.Bushing 50 is by needle bearing 5000 replace.Needle bearing 5000 includes axially projecting tab 5001.Tab 5001 is engaged with spring end 24.Torsionspring 70 end 71 is attached to retainer by adhesive, melting welding, solder, hard solder or other modes as known in the art 4000.End 71 frictionally grasps the outer ring 5002 of needle bearing via interference fit, this causes to be applied to outer ring 5002 Radial normal force.Surface 31 has more wedge profiles.
As maximum load security feature, the angle by belt wheel relative to axis rotates, and tab 5001 will be approached and then be connect Close the end 24 of wind spring 20.Under load effect, wind spring 20 is loaded along coiling direction.As load increases, torsion Spring 70 wind it is tighter, and tab 5001 advance and then press pressing spring 20 end 24, this have rolling up end 24 The effect advanced up around the unwinding side of spring, so that the diameter of wind spring 20 increases, thus described in reduction or release Wind spring acts on the grasping of the friction on axis surface 81.This protective device in excessive-torque situation from being damaged.
Figure 12 is the decomposition view of the alternate embodiment in Figure 11.Needle bearing 5000 includes from the prominent of the extension of outer ring 5002 Piece 5001.Tab 5001 extends on the axial direction for being parallel to axis A ﹣ A.
A kind of Isolation and decoupling device comprising: the axis with outer surface；Belt wheel is rotatably engaged around the axis；Have The torsionspring of first section and the second section, first section have major diameter, which has minor diameter, described big Diameter is greater than minor diameter, which engages with belt wheel；Wind spring, internal diameter are less than the outer diameter of the outer surface, the volume It is frictionally engaged around spring and the outer surface, which loads along coiling direction, and the torsionspring, which has, fixedly to be connected Be connected to the end of wind spring, the torsionspring is loaded along coiling direction, thus the diameter of each coil of torsionspring with Load increase and reduced with progressive sequence, the radial outside of wind spring is arranged in second section, so that the secondth area Section is moved radially inwardly during load condition to clamp wind spring, and the belt wheel includes being arranged in scheduled load shape Gradually from the component of the outer surface of axis release wind spring under state.
A kind of Isolation and decoupling device comprising the axis with outer surface；Belt wheel is rotatably engaged around axis；With first The torsionspring of section and the second section, first section have a first diameter, which has a second diameter, and described the One diameter is not equal to second diameter, and the torsionspring is engaged with belt wheel；One-way clutch member rubs with the outer surface Engagement, the one-way clutch member are loaded along coiling direction, and the torsionspring, which has, is fixedly connected to one-way clutch The end of component, the torsionspring are loaded along coiling direction, and thus the diameter of each coil of torsionspring is with load increasing Add and changed with progressive sequence, the radial outside of one-way clutch member is arranged in second section, so that secondth area Section is moved radially during load condition to clamp one-way clutch member, and the belt wheel includes being arranged in predetermined load shape The component of one-way clutch member is gradually discharged under state from the outer surface.
Although there have been described herein forms of the invention, it will be apparent to those skilled in the art that Be, without departing from the spirit and scope of the present invention, can structure to component and relationship be changed.

Claims (10)

1. a kind of Isolation and decoupling device comprising:
Axis, the axis have outer surface (81)；
Belt wheel (30), the belt wheel are rotatably engaged around the axis；
Torsionspring (70), the torsionspring have the first section (23) and the second section (22), and first section has Major diameter, second section have minor diameter, and the major diameter is greater than the minor diameter, the torsionspring and the belt wheel Engagement；
Wind spring (20), the internal diameter of the wind spring are less than the outer diameter of the outer surface, the wind spring and described outer Mantle friction engagement；
The wind spring is loaded along coiling direction；
The torsionspring has the end (72) for being fixedly connected to the wind spring；
The torsionspring is loaded along coiling direction, and thus the diameter of each coil of the torsionspring is with load increase And reduced with progressive sequence；And
The radial outside of the wind spring is arranged in second section, so that the second section diameter during load condition To moving inwardly to clamp the wind spring.
2. Isolation and decoupling device according to claim 1, wherein the belt wheel includes such component, the component setting At the engagement for the outer surface for gradually discharging the wind spring and the axis when predetermined load state occurs.
3. Isolation and decoupling device according to claim 1, wherein first section does not contact the wind spring.
4. a kind of Isolation and decoupling device comprising:
Axis；
Belt wheel, the belt wheel have inner surface and rotatably engage around the axis；
Torsionspring, the torsionspring have the first section and the second section, and first section has a major diameter, and described the Two sections have minor diameter, and the major diameter is greater than the minor diameter, and the torsionspring is engaged with the axis；
Wind spring, the outer diameter of the wind spring are greater than the diameter of the inner surface, the wind spring and the inner surface It is frictionally engaged；
The wind spring is loaded along unwinding direction；
The torsionspring has the end for being fixedly connected to the wind spring；
The torsionspring is loaded along unwinding direction, and thus the diameter of each coil of the torsionspring is with load increasing Add and is sequentially increased with progressive；
The radially inner side of the wind spring is arranged in first section, so that the first section diameter during load condition To being displaced outwardly to clamp the wind spring.
5. Isolation and decoupling device according to claim 4, wherein the axis includes such component, and the component is arranged to The wind spring is gradually discharged from the inner surface of the belt wheel when predetermined load state occurs.
6. Isolation and decoupling device according to claim 4, wherein second section does not contact the wind spring.
7. a kind of Isolation and decoupling device comprising:
Axis, the axis have outer surface；
Belt wheel, the belt wheel are rotatably engaged around the axis；
Torsionspring, the torsionspring have the first section and the second section, and first section has first diameter, described Second section has second diameter, and the first diameter is not equal to the second diameter, and the torsionspring connects with the belt wheel It closes；
One-way clutch member, the one-way clutch member and the outer surface are frictionally engaged；
The one-way clutch member is loaded along coiling direction；
The torsionspring has the end for being fixedly connected to the one-way clutch member；
The torsionspring is loaded along the winding, and thus the diameter of each coil of the torsionspring is with load increase Changed with progressive sequence；
The radial outside of the one-way clutch member is arranged in second section, so that the second section diameter is in load shape To mobile to clamp the one-way clutch member during state；And
The belt wheel includes such component, and the component is arranged to gradually discharge when predetermined load state occurs described unidirectional The frictional engagement of clutch member and the outer surface.
8. a kind of Isolation and decoupling device comprising:
Axis；
Belt wheel, the belt wheel have inner surface and rotatably engage around the axis；
Torsionspring, the torsionspring have the first section and the second section, and first section has a major diameter, and described the Two sections have minor diameter, and the major diameter is greater than the minor diameter, and the torsionspring is engaged with the axis；
Wind spring, the outer diameter of the wind spring are greater than the diameter of the inner surface, the wind spring and the inner surface It is frictionally engaged；
The wind spring is loaded along unwinding direction；
The torsionspring has the end for being fixedly connected to the wind spring；
The torsionspring is loaded along unwinding direction, and thus the diameter of each coil of the torsionspring is with load increasing Add and is sequentially increased with progressive；
The radially inner side of the wind spring is arranged in first section, so that the first section diameter during load condition To being displaced outwardly to clamp the wind spring；With
The axis includes such component, and the component is arranged to gradually release when predetermined load state occurs from the inner surface Put the wind spring.
9. Isolation and decoupling device according to claim 7 further includes the bearing being arranged between the belt wheel and the axis.
10. Isolation and decoupling device according to claim 9, wherein the component extends from bearing race.
CN201780031881.5A 2016-04-19 2017-04-18 Isolation decoupler Active CN109154378B (en)

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AU2017252526B2 (en) 2019-08-29
BR112018071489B1 (en) 2023-05-09
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US10087994B2 (en) 2018-10-02
CA3021500C (en) 2020-11-24
JP6690018B2 (en) 2020-04-28
JP2019513958A (en) 2019-05-30
BR112018071489A2 (en) 2019-02-19
EP3446001A1 (en) 2019-02-27
EP3446001B1 (en) 2021-03-24
AU2017252526A1 (en) 2018-11-15
KR102201913B1 (en) 2021-01-11
US20170298995A1 (en) 2017-10-19
CA3021500A1 (en) 2017-10-26
KR20190002527A (en) 2019-01-08
AU2019268147B2 (en) 2021-08-12
AU2019268147A1 (en) 2019-12-12
MX2018012731A (en) 2019-01-28

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